Edge grinding device for transformer cooling fin production

Abstract

The invention relates to the technical field of polishing devices, and particularly discloses an edge polishing device for transformer cooling fin production, which comprises a conveying table, a pressing assembly and a polishing device, the pressing assembly and the polishing device are arranged at one end of the conveying table, the polishing device comprises walking rails, a polishing assembly and a driving assembly, and the walking rails comprise a front rail, a rear rail, a left rail and a right rail; a set of grinding assembly is arranged in each walking track, reversing assemblies are arranged between the two ends of each walking track and the grinding assemblies, the pressing assembly comprises an upper set of pressing frames and a lower set of pressing frames used for fixing the cooling fins, positioning plates and two sets of pushing pieces are arranged on the peripheries of the pressing frames in a sliding mode, and a water storage cavity is formed in each pressing frame. A plurality of water outlet holes are uniformly distributed in the positioning plate; during grinding, the cooling fin is pressed on the positioning plate, grinding is more uniform, the grinding wheel can grind the upper face and the lower face of the cooling fin through the reversing assembly, and the ground cooling fin is cleaned through water outlet holes formed in the positioning plate.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, and in particular to an edge grinding device used for producing transformer heat sinks. Background Art

[0002] When the transformer is running, the heat generated by the loss in the winding and the core must be dissipated in time to avoid overheating and insulation damage. For small-capacity transformers, the ratio of the surface area to the transformer volume is relatively large, and self-cooling can be used to dissipate the heat through radiation and natural convection. In order to speed up the dissipation of heat, heat sinks are usually used for heat dissipation. When processing the heat sink, in order to ensure the uniformity of heat dissipation and the effect of heat dissipation, the heat sink usually needs to be polished.

[0003] A Chinese patent document with authorization announcement number CN116038464B discloses a heat sink production and polishing device for transformers, including a main body, a driver fixing plate, a dust collector and a feeder. A driver is installed on the inner bottom wall of the main body, a slide groove is provided on the top of the driver, a moving block is installed through the top of the slide groove, a first electric telescopic rod is installed on the top of the moving block, a fixing plate is installed on the top of the first electric telescopic rod, a dust collector is installed on the bottom of the main body, and a feeder is installed on the outer wall of the main body. The clamping function can be achieved by installing a clamping block, and the heat sink is placed inside the clamping groove. Then the clamping rod contracts to drive the first spring to contract, and the anti-sliding block on the outer wall of the anti-sliding plate contacts the surface of the heat sink to prevent the heat sink from sliding, thereby realizing the clamping function, and then the heat sink is polished by the polishing device.

[0004] In the above technical solution, the heat sink is clamped by a clamping block and then polished. Since the heat sink is relatively thin, the polishing block is pressed on the heat sink after clamping during polishing, which can easily cause the heat sink to deform and thus affect its use. The heat sink is usually relatively thin and has a certain curvature. When polishing the heat sink, the raised parts of the heat sink can be polished, and the recessed parts on the heat sink cannot contact the polishing block. The polishing block cannot polish the recessed parts, which leads to the problem of poor polishing effect of the heat sink. Summary of the invention

[0005] The invention provides an edge grinding device for transformer heat sink production, aiming to solve the problem of uneven heat sink surface in the related art.

[0006] An edge grinding device for transformer heat sink production comprises: a conveying platform, a pressing assembly arranged at one end of the conveying platform and a grinding device, the grinding device comprises a walking track, a grinding assembly and a driving assembly, the walking track comprises four tracks, front, back, left and right, each walking track is provided with a group of grinding assemblies, the grinding assembly comprises a walking bracket, a mounting shaft arranged vertically and rotatably on the walking track, two groups of grinding wheels and two groups of pressing members installed at the bottom of the walking bracket, the pressing member comprises a pressing wheel and a pressing head, the heat sink is located between the pressing wheel and the pressing head, a reversing assembly is arranged between the two ends of each walking track and the grinding assembly, the driving assembly is used to drive the grinding assembly to move in the walking track, when the grinding assembly moves to the end of the walking track and moves in the reverse direction, the reversing assembly drives the two groups of grinding wheels to exchange positions; The pressing assembly includes two sets of upper and lower pressing frames for fixing the heat sink, positioning plates and two sets of pushing members are slidably arranged around the pressing frames, and the pushing members make the upper and lower positioning plates slide out of the pressing frames alternately to abut against the upper and lower side surfaces of the heat sink respectively, and the pressing head and the pressing wheel are pressed on the positioning plates and the heat sink respectively, and a water storage cavity is arranged in each pressing frame, and a plurality of water outlet holes are arranged on the positioning plates. After the heat sink is polished, the water storage cavity is opened and water is discharged through the water outlet holes to clean the polished part.

[0007] The effect is that when grinding the heat sink, the heat sink is pressed by the pressing wheel and the pressing head so that the heat sink is against the positioning plate, and then the heat sink is grinded by the grinding wheel, which can avoid uneven grinding due to the unevenness of the heat sink. When the grinding assembly moves to the end of the grinding track, the two groups of grinding wheels are exchanged through the reversing assembly, and the grinding wheel grinding the upper surface of the heat sink is moved to one side of the heat sink, and the other grinding wheel is moved from one side of the heat sink to the lower surface of the heat sink to grind the lower surface of the heat sink. Both the upper and lower sides of the heat sink can be polished. After the grinding is completed, when the positioning plate is moved toward the pressing frame by the pushing member, the water storage chamber in the pressing frame is connected to the water outlet, and the grinding position on the heat sink is cleaned by draining water through the water outlet.

[0008] Preferably, the reversing assembly includes a driving gear fixed on the mounting shaft and a one-way rack arranged on the front and rear sides of the walking track, the one-way rack includes a tooth plate and a plurality of trapezoidal teeth evenly distributed on the tooth plate, a slide groove is provided on the walking track, the tooth plate is slidably arranged in the slide groove, a compression spring is arranged between the tooth plate and the bottom of the slide groove, and the number of trapezoidal teeth is set to enable the driving gear to rotate 180 degrees; when the mounting shaft moves toward the end of the walking track, the driving gear presses the trapezoidal teeth to compress the compression spring, and when the mounting shaft leaves the end of the walking track, the one-way rack causes the driving gear to rotate 180 degrees, thereby causing the two grinding wheels to exchange positions, and the two grinding wheels respectively grind the upper and lower sides of the heat sink.

[0009] Preferably, the mounting shaft is rotatably arranged between the output end of the driving assembly and there is friction when the mounting shaft rotates, and the friction is greater than the pressure required when the compression spring is compressed; there is friction between the mounting shaft and the driving assembly, which prevents the mounting shaft from rotating when the mounting shaft moves toward the end of the walking track.

[0010] Preferably, the reversing assembly is a reversing motor installed on the driving assembly, which is connected to the output shaft of the reversing motor after installation; by setting the reversing motor, when the installation shaft moves to the end of the walking track, the reversing motor rotates to drive the installation shaft to rotate 180 degrees to complete the exchange of the positions of the two grinding wheels.

[0011] Preferably, each of the positioning plates is provided with a positioning groove, which cooperates with the positioning head; through the positioning groove, when the grinding assembly moves in the walking track, the positioning head slides in the positioning groove so that the positioning head pressing wheel presses the heat sink onto the positioning plate to make the heat sink flat.

[0012] Preferably, the driving assembly is a linear motor respectively installed on the four running tracks and arranged parallel to the running tracks, and the mounting shaft is installed at the output end of the linear motor; the mounting shaft is driven to slide in the running track by the linear motor.

[0013] Preferably, the upper and lower groups of pushing members both include a driving motor, a rotating gear and four driven racks. The driving motor is installed on the pressing frame, the rotating rack is installed on the output shaft of the driving motor, the four driven racks are respectively connected to the four pressing plates, and the four driven racks are all meshed with the rotating gear. The driving motor is driven by forward rotation to drive the rotating gear to rotate, thereby driving the four driven racks to move toward the four sides of the pressing frame and thus making the positioning plate rest against the heat sink. When the driving motor rotates in the reverse direction, the positioning plate gathers toward the middle of the pressing frame and then moves away from the edge of the heat sink.

[0014] Preferably, the upper and lower groups of pushing members include four electric telescopic rods, which are installed on the pressing frame, and the pressing plates are connected to the movable ends of the electric telescopic rods; the electric telescopic rods are arranged to drive the four pressing plates to move toward the edge of the pressing frame or gather toward the middle of the pressing frame.

[0015] Preferably, an electric push rod is installed above the conveying platform, and the pushing member above is installed on the movable end of the electric push rod. The electric push rod drives the pressing frame to rise and fall. A transverse moving member is also installed on the conveying platform. The transverse moving member is a transverse screw mechanism, and the electric push rod is installed on the screw nut of the transverse screw mechanism. When the heat sink moves between the upper and lower pressing frames, the pressing frame is driven down by the electric push rod to fix the heat sink. The position of the pressing frame is adjusted by setting the transverse screw mechanism, so that the edge of the heat sink to be polished is exposed.

[0016] Preferably, a water valve is provided on the water storage chamber, and a water pipe connected to the water outlet of the water valve is provided on the positioning plate, and the water pipe is connected to the water outlet hole; when the positioning plate gathers toward the middle of the pressing frame, the water pipe is located under the water valve and connected to the water outlet of the water valve, the water valve opens and discharges water from the water outlet hole to clean the polished part of the heat sink.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are as follows: 1. By setting four running tracks, the grinding assembly grinds all four sides of the heat sink when sliding in the four running tracks. When grinding the heat sink, first press the heat sink with the pressing wheel and the pressing head to make the heat sink fit on the positioning plate to avoid uneven surface of the heat sink. The part of the heat sink protruding toward the grinding wheel is grinded deeper by the grinding wheel, which leads to uneven grinding of the heat sink. 2. When the grinding assembly moves to the end of the travel track, the two grinding wheels are exchanged through the reversing assembly, so that the grinding wheel that is grinding the heat sink rotates to one side of the heat sink, and the grinding wheel on one side of the heat sink rotates to the ungrinded side of the heat sink for grinding, so that the four sides of the two surfaces of the heat sink can be ground; 3. After the grinding of the heat sink is completed, the pressing plate is gathered toward the middle of the pressing frame through the pushing member, and the grinded position on the heat sink is exposed until the water pipe on the positioning plate is connected to the water outlet of the water valve of the water storage chamber. When the water valve is opened, the debris on the heat sink can be washed through the water outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the walking track of the present invention.

[0020] Figure 3 It is a left-side structural schematic diagram of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the grinding assembly of the present invention.

[0022] Figure 5 It is a schematic structural diagram of the pushing member of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the grinding assembly of the present invention grinding the lower end surface of the edge of the heat sink.

[0024] Figure 7 It is a structural schematic diagram of the water pipe and the water valve being connected to each other in the present invention.

[0025] Figure 8 It is a schematic structural diagram of the reversing assembly of the present invention.

[0026] Reference numerals: 1. Conveyor platform; 2. Pressing assembly; 21. Pressing frame; 211. Water valve; 22. Positioning plate; 221. Slide; 222. Water pipe; 223. Water outlet; 23. Pushing member; 231. Driving motor; 232. Rotating gear; 233. Driven rack; 3. Grinding device; 31. Traveling track; 32. Grinding assembly; 321. Traveling bracket; 322. Grinding wheel; 323. Pressing member; 324. Mounting shaft; 33. Driving assembly; 4. Reversing assembly; 41. Driving gear; 42. One-way rack; 421. Tooth plate; 422. Trapezoidal teeth; 43. Compression spring; 5. Electric push rod; 6. Lateral moving member. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0028] like Figure 1-Figure 8 As shown, an edge grinding device for transformer heat sink production includes a conveying platform 1, a pressing component 2 and a grinding component 32; when the heat sink is being ground, the heat sink is conveyed to the pressing component 2 by the conveying platform 1, the heat sink is pressed by the pressing component 2 to fix the heat sink, and then the edge of the heat sink is ground by the grinding device 3.

[0029] The grinding device 3 includes a walking track 31, a grinding assembly 32 and a driving assembly 33. The walking track 31 includes four tracks arranged in front, back, left and right. A group of grinding assemblies 32 are slidably arranged in each track. The four sides of the heat sink are respectively ground by the grinding assemblies 32. The driving assembly 33 is a linear motor respectively installed on the four walking tracks 31 and arranged parallel to the walking tracks 31. The grinding assembly 32 is installed at the output end of the linear motor. The linear motor drives the grinding assembly 32 to slide in the walking track 31 to grind the heat sink. In other embodiments of the present invention, the driving assembly 33 is four screw mechanisms. The walking trajectories of the active ends of the screw mechanisms are respectively parallel to the four walking tracks 31. The grinding assembly 32 is installed on the screw nut of the screw mechanism. The operation of the screw mechanism drives the grinding assembly 32 to move.

[0030] The grinding assembly 32 includes a walking bracket 321, a mounting shaft 324 vertically arranged and rotatably arranged on the walking track 31, two sets of grinding wheels 322 installed at the bottom of the walking bracket 321, and two sets of pressing members 323, the pressing member 323 includes a pressing wheel and a pressing head; the walking bracket 321 is fixedly arranged at the output end of the driving assembly 33, as shown above, the walking bracket 321 is installed on the output end of the linear motor or the screw nut of the screw mechanism, and the grinding wheel 322 and the pressing member 323 arranged on the same side of the mounting shaft 324 are One group, one group of grinding wheels 322 is located above the heat sink and in contact with the heat sink, and the other group of grinding wheels 322 is located below the heat sink and does not contact the heat sink. When the mounting shaft 324 rotates 180 degrees, the two groups of grinding wheels 322 exchange positions, and the two groups of pressing members 323 also exchange positions. The grinding wheel 322 originally located above the heat sink rotates to one side of the heat sink, and the grinding wheel 322 originally located below the heat sink rotates to contact the heat sink. The upper and lower sides of the heat sink are polished respectively by the two groups of grinding wheels 322.

[0031] A reversing assembly 4 is provided between the two ends of each walking track 31 and the grinding assembly 32. The reversing assembly 4 includes a driving gear 41 fixedly arranged on the mounting shaft 324 and a one-way rack 42 arranged on the front and rear sides of the walking track 31. The one-way rack 42 includes a tooth plate 421 and a plurality of trapezoidal teeth 422 evenly distributed on the tooth plate 421. A slide groove 221 is provided on the walking track 31. The tooth plate 421 is slidably arranged in the slide groove 221. A compression spring 43 is provided between the tooth plate 421 and the bottom of the slide groove 221. When the driving gear 41 moves, it contacts the inclined surface of the trapezoidal tooth 422. When the driving gear 41 applies thrust to the inclined surface of the trapezoidal tooth 422 and compresses the compression spring 43, the mounting shaft 324 does not rotate at this time. When the driving gear 41 moves to contact the vertical surface of the trapezoid, the driving gear 41 rotates. The number of trapezoidal teeth 422 allows the driving gear 41 to rotate exactly 180 degrees. There is friction between the mounting shaft 324 and the output end of the driving assembly 33 and when the mounting shaft 324 rotates, the friction is greater than the pressure required when the compression spring 43 is compressed. That is to say, when the compression spring 43 is compressed, the mounting shaft 324 does not rotate.

[0032] One-way racks 42 and compression springs 43 are provided on both the front and rear sides of the travel track 31. When the grinding assembly 32 moves in the travel track 31, the pressing piece 323 is always in front of the grinding wheel 322 so that the area to be polished is in a pressed state before polishing. When the grinding wheel 322 moves forward, the lower surface of the heat sink is polished. When the driving gear 41 passes over the one-way rack 42 in front and moves in the reverse direction, it rotates 180 degrees and exchanges the positions of the two sets of grinding wheels 322. At this time, the upper The square grinding wheel 322 contacts the heat sink and the lower surface of the heat sink, and reciprocates to grind the upper and lower surfaces of the heat sink through two sets of grinding wheels 322. By setting four sets of grinding assemblies 32 to move within four sets of walking tracks 31, the four sides of the heat sink are grinded. Before the grinding wheel 322 grinds the heat sink, it is pressed by the pressing piece 323 to avoid uneven grinding of the area to be polished due to certain deformation of the heat sink during grinding.

[0033] In other embodiments of the present invention, the reversing assembly 4 is a reversing motor installed on the driving assembly 33, and the mounting shaft 324 is connected to the output shaft of the reversing motor; the rotation of the reversing motor drives the mounting shaft 324 to rotate 180 degrees, thereby causing the two sets of grinding wheels 322 to exchange positions.

[0034] The pressing assembly 2 includes two sets of upper and lower pressing frames 21 for fixing the heat sink, and positioning plates 22 and pushing members 23 are slidably arranged around the pressing frames 21; when the conveying platform 1 conveys the heat sink to the pressing assembly 2, the heat sink is fixed by the pressing frame 21, and the pressing frame 21 is pressed on the middle of the heat sink, and the area to be polished around the heat sink is outside the pressing frame 21. When polishing the four sides above the heat sink, the four positioning plates 22 at the bottom are pushed out from the four sides of the pressing frame 21 by the pushing members 23 to support the heat sink. When polishing the four sides below the heat sink, the four positioning plates 22 at the top are pushed out from the four sides of the pressing frame 21 by the pushing members 23 to support the heat sink.

[0035] Each positioning plate 22 is provided with a positioning slot 221, which cooperates with the positioning head; when grinding the bottom surface of the heat sink, the positioning head is located in the positioning slot 221 of the upper positioning plate 22 and slides in the positioning slot 221. From top to bottom, they are the positioning head, positioning plate 22, heat sink and pressing wheel respectively. The corresponding pressing wheel is located at the bottom of the heat sink to press the heat sink. Even if the heat sink has a certain deformation, the heat sink to be grinded is pressed by the pressing wheel so that the heat sink to be grinded is attached to the positioning plate 22. The heat sink does not have any deformation. The distance between the grinding wheel 322 and the pressing wheel is relatively close. When grinding the heat sink, the heat sink is grinded more evenly, and the area to be grinded is not grinded too deeply or not grinded at all.

[0036] The upper and lower groups of pushing members 23 each include a driving motor 231, a rotating gear 232 and four driven racks 233. The driving motor 231 is mounted on the pressing frame 21, and the rotating rack is mounted on the output shaft of the driving motor 231. The four driven racks 233 are respectively connected to the four pressing plates, and the four driven racks 233 are all meshed with the rotating gear 232. When the driving motor 231 rotates to drive the rotating gear 232 to rotate forward, the driven racks 233 move toward the four sides of the heat sink to support the heat sink. When the driving motor 231 rotates to drive the rotating gear 232 to rotate reversely, the driven racks 233 gather toward the middle of the heat sink. When the upper driving motor 231 rotates forward, the lower driving motor 231 rotates reversely, and vice versa. When the upper driving motor 231 rotates reversely, the lower driving motor 231 rotates forward.

[0037] In other embodiments of the present invention, the pusher 23 includes four electric telescopic rods, which are installed on the pressing frame 21. The pressing plate is connected to the movable end of the electric telescopic rod, and the pressing plate is driven to slide in the pressing frame 21 by the electric telescopic rod.

[0038] The conveying platform 1 is an electric conveying roller, and an electric push rod 5 is installed on the top of the conveying platform 1. The upper pushing member 23 is installed on the movable end of the electric push rod 5. When the electric conveying roller conveys the heat sink to the bottom of the upper pressing frame 21, the electric push rod 5 drives the pressing frame 21 to press the heat sink, and the lower pressing frame 21 is always parallel to the top surface of the conveying roller. A transverse moving member 6 is also installed on the conveying platform 1. The transverse moving member 6 is a transverse screw mechanism. The electric push rod 5 is installed on the screw nut of the transverse screw mechanism. When the size of the heat sink changes and the position of the pressing frame 21 needs to be adjusted, the electric push rod 5 is driven by the transverse screw mechanism to move, and then the pushing member 23 and the pressing frame 21 are driven to move, so that the pressing frame 21 is pressed on the middle of the heat sink.

[0039] A water storage chamber is provided in each pressing frame 21, a water valve 211 is provided on the water storage chamber, a water pipe 222 connected to the water outlet of the water valve 211 is provided on the positioning plate 22, and a plurality of water outlet holes 223 connected to the water pipe 222 are evenly distributed on the positioning plate 22; after the grinding of the heat sink is completed, the positioning plate 22 is extended into the pressing frame 21 through the pushing member 23 until the water tank on the positioning plate 22 contacts the water outlet of the water valve 211 in the water storage chamber, at which time the water valve 211 is opened, and water flows from the water storage chamber into the water pipe 222 and then into the water outlet hole 223, so as to wash away the debris on the grinded heat sink.

[0040] Working principle: When grinding the heat sink, the heat sink is first conveyed to between the two pressing frames 21 through the conveyor platform 1, and then the upper pressing frame 21 descends to clamp the heat sink. When grinding the upper surface of the edge of the heat sink, the pusher 23 pushes the positioning plate 22 under the heat sink to extend to support the heat sink. The four grinding assemblies 32 move in the four walking tracks 31 respectively to grind the upper surface of the heat sink. In front of the walking track of the grinding wheel 322, the pressing wheel and the pressing head press the heat sink. At this time, the distance between the pressing wheel and the grinding wheel 322 is small, so that the section of the heat sink to be ground is attached to the positioning plate 22, which can avoid the grinding caused by The deformation of the heat sink causes uneven grinding; when the upper surface of the heat sink is polished and the lower surface is polished, the grinding assembly 32 moves to the end of the walking track 31 and then moves in the opposite direction, the driving assembly 33 rotates the mounting shaft 324 180 degrees so that the two sets of grinding wheels 322 exchange positions, and the lower surface of the heat sink is polished by the other set of grinding wheels 322, and both the upper and lower surfaces of the heat sink are polished; after the grinding is completed, the positioning plate 22 is pushed by the pushing member 23 to move until the water pipe 222 on the positioning plate 22 is connected to the water outlet of the water valve 211, and the water valve 211 is opened to wash the debris on the polished heat sink.

[0041] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An edge grinding device for transformer heat sink production, comprising: A conveying platform (1), a pressing assembly (2) and a grinding device (3) arranged at one end of the conveying platform (1), characterized in that: The grinding device (3) comprises a walking track (31), a grinding assembly (32) and a driving assembly (33), wherein the walking track (31) comprises four tracks, front, rear, left and right, each walking track (31) is provided with a set of grinding assemblies (32), and the grinding assembly (32) comprises a walking bracket (321), a mounting shaft (324) vertically arranged and rotatably arranged on the walking track (31), two sets of grinding wheels (322) installed at the bottom of the walking bracket (321), and two sets of pressing wheels (324). A pressing member (323), the pressing member (323) comprises a pressing wheel and a pressing head, a heat sink is located between the pressing wheel and the pressing head, a reversing assembly (4) is provided between the two ends of each walking track (31) and the grinding assembly (32), the driving assembly (33) is used to drive the grinding assembly (32) to move within the walking track (31), when the grinding assembly (32) moves to the end of the walking track (31) and moves in the reverse direction, the reversing assembly (4) drives the two sets of grinding wheels (322) to exchange positions; The pressing assembly (2) comprises two sets of upper and lower pressing frames (21) for fixing the heat sink, positioning plates (22) and two sets of pushing members (23) are slidably arranged around the pressing frames (21), the pushing members (23) enable the upper and lower positioning plates (22) to slide out of the pressing frames (21) alternately to abut against the upper and lower side surfaces of the heat sink, respectively, the pressing head and the pressing wheel press on the positioning plates (22) and the heat sink, respectively, each pressing frame (21) is provided with a water storage cavity, and the positioning plates (22) are evenly distributed with a plurality of water outlet holes (223).

2. The edge grinding device for transformer heat sink production according to claim 1, characterized in that: The reversing assembly (4) comprises a driving gear (41) fixedly arranged on a mounting shaft (324) and a one-way rack (42) arranged on both sides of the front and rear of the walking track (31); the one-way rack (42) comprises a tooth plate (421) and a plurality of trapezoidal teeth (422) evenly distributed on the tooth plate (421); a slide groove (221) is provided on the walking track (31); the tooth plate (421) is slidably arranged in the slide groove (221); a compression spring (43) is arranged between the tooth plate (421) and the bottom of the slide groove (221); and the number of the trapezoidal teeth (422) is set to enable the driving gear (41) to rotate 180 degrees.

3. The edge grinding device for transformer heat sink production according to claim 1, characterized in that: The installation shaft (324) is rotatably arranged between the output end of the driving assembly (33), and friction exists when the installation shaft (324) rotates, and the friction is greater than the pressure required when the compression spring (43) is compressed.

4. The edge grinding device for transformer heat sink production according to claim 1, characterized in that: The reversing assembly (4) is a reversing motor installed on the driving assembly (33) and is connected to the output shaft of the reversing motor after installation.

5. The edge grinding device for transformer heat sink production according to claim 3, characterized in that: Each of the positioning plates (22) is provided with a positioning slot (221), and the positioning slot (221) cooperates with the positioning head.

6. The edge grinding device for transformer heat sink production according to claim 3, characterized in that: The driving assembly (33) is a linear motor respectively mounted on the four running tracks (31) and arranged parallel to the running tracks (31), and the mounting shaft (324) is mounted on the output end of the linear motor.

7. The edge grinding device for transformer heat sink production according to claim 4, characterized in that: The upper and lower groups of pushing members (23) each comprise a driving motor (231), a rotating gear (232) and four driven racks (233); the driving motor (231) is mounted on the pressing frame (21); the rotating gear is mounted on the output shaft of the driving motor (231); the four driven racks (233) are respectively connected to four pressing plates; and the four driven racks (233) are all meshed with the rotating gear (232).

8. The edge grinding device for transformer heat sink production according to claim 5, characterized in that: The upper and lower groups of pushing members (23) include four electric telescopic rods, which are mounted on the pressing frame (21), and the pressing plates are connected to the movable ends of the electric telescopic rods.

9. The edge grinding device for transformer heat sink production according to any one of claims 1 to 6, characterized in that: An electric push rod (5) is installed above the conveying platform (1), and a pushing member (23) above is installed on the movable end of the electric push rod (5). The electric push rod (5) drives the pressing frame (21) to move up and down. A transverse moving member (6) is also installed on the conveying platform (1). The transverse moving member (6) is a transverse screw mechanism. The electric push rod (5) is installed on a screw nut of the transverse screw mechanism.

10. The edge grinding device for transformer heat sink production according to claim 7, characterized in that: The water storage chamber is provided with a water valve (211), the positioning plate (22) is provided with a water pipe (222) connected to the water outlet of the water valve (211), and the water pipe (222) is connected to the water outlet hole (223).

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